# Modify PCM material layer Settings

**URL:** <https://discourse.ladybug.tools/t/modify-pcm-material-layer-settings/34993>\
**Category:** uncategorized\
**Created:** [October 29, 2024, 6:17am UTC](https://discourse.ladybug.tools/t/modify-pcm-material-layer-settings/34993 "2024-10-29T06:17:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ZoeySwift](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/9e8a1a/32.png) [@ZoeySwift](https://discourse.ladybug.tools/u/ZoeySwift)\
**Post date:** [October 29, 2024, 6:17am UTC](https://discourse.ladybug.tools/t/modify-pcm-material-layer-settings/34993/1 "2024-10-29T06:17:55Z")

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Based on my ideas, how to modify the duplicate name of PCM material layer Settings

 ![1](https://discourse.ladybug.tools/uploads/default/original/3X/2/0/20aa8d945fb687bb3cf039a2560a9356328c8889.jpeg)  
 ![2](https://discourse.ladybug.tools/uploads/default/original/3X/d/6/d6cd5afb86d52d08cf30699feabd390b576929f4.jpeg)  
 ![3](https://discourse.ladybug.tools/uploads/default/original/3X/e/5/e59d42e319cfebe56b6869b2823fe7164e7e34bc.jpeg)  
 ![4](https://discourse.ladybug.tools/uploads/default/original/3X/9/5/95d67ff6215018d2a9e84c1086a8fe14690e1704.jpeg)

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<div class="post-metadata">

**Author:** ![hoda](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/h/c0e974/32.png) [@hoda](https://discourse.ladybug.tools/u/hoda)\
**Post date:** [October 29, 2024, 6:32am UTC](https://discourse.ladybug.tools/t/modify-pcm-material-layer-settings/34993/2 "2024-10-29T06:32:58Z")

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Hi. How define PCM in LadybugTools? It has not PCM component.

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<div class="post-metadata">

**Author:** ![mostapha](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/mostapha/32/15244_2.png) [@mostapha](https://discourse.ladybug.tools/u/mostapha)\
**Post date:** [November 3, 2024, 6:00pm UTC](https://discourse.ladybug.tools/t/modify-pcm-material-layer-settings/34993/3 "2024-11-03T18:00:25Z")

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Hi @ZoeySwift,

Based on the error message, you need to change the name of the new material that you add to the definition not to conflict with the name of the existing material. That should resolve the problem.